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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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819b4861c1
ti_dt_clk_init_provider() can now be used to initialize the contents of a single clock IP block. This parses all the clocks under the IP block and calls the corresponding init function for them. This patch also introduces a helper function for the TI clock drivers to get register info from DT and append the master IP info to this. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/*
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* TI clock drivers support
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*
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* Copyright (C) 2013 Texas Instruments, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __LINUX_CLK_TI_H__
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#define __LINUX_CLK_TI_H__
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#include <linux/clkdev.h>
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/**
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* struct ti_dt_clk - OMAP DT clock alias declarations
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* @lk: clock lookup definition
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* @node_name: clock DT node to map to
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*/
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struct ti_dt_clk {
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struct clk_lookup lk;
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char *node_name;
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};
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#define DT_CLK(dev, con, name) \
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{ \
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.lk = { \
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.dev_id = dev, \
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.con_id = con, \
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}, \
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.node_name = name, \
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}
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/* Maximum number of clock memmaps */
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#define CLK_MAX_MEMMAPS 4
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typedef void (*ti_of_clk_init_cb_t)(struct clk_hw *, struct device_node *);
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/**
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* struct clk_omap_reg - OMAP register declaration
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* @offset: offset from the master IP module base address
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* @index: index of the master IP module
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*/
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struct clk_omap_reg {
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u16 offset;
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u16 index;
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};
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/**
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* struct ti_clk_ll_ops - low-level register access ops for a clock
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* @clk_readl: pointer to register read function
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* @clk_writel: pointer to register write function
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*
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* Low-level register access ops are generally used by the basic clock types
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* (clk-gate, clk-mux, clk-divider etc.) to provide support for various
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* low-level hardware interfaces (direct MMIO, regmap etc.), but can also be
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* used by other hardware-specific clock drivers if needed.
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*/
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struct ti_clk_ll_ops {
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u32 (*clk_readl)(void __iomem *reg);
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void (*clk_writel)(u32 val, void __iomem *reg);
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};
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extern struct ti_clk_ll_ops *ti_clk_ll_ops;
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void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index);
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void ti_dt_clocks_register(struct ti_dt_clk *oclks);
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void ti_dt_clk_init_provider(struct device_node *np, int index);
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int ti_clk_retry_init(struct device_node *node, struct clk_hw *hw,
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ti_of_clk_init_cb_t func);
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#endif
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